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ICS1892 bảng dữ liệu(PDF) 95 Page - Integrated Circuit Systems |
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ICS1892 bảng dữ liệu(HTML) 95 Page - Integrated Circuit Systems |
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95 / 148 page  Chapter 8 Management Register Set ICS1892, Rev. D, 2/26/01 February 26, 2001 95 ICS1892 © 2000-2001, Integrated Circuit Systems, Inc. All rights reserved. 8.13 Register 18: 10Base-T Operations Register The 10Base-T Operations Register provides an STA with the ability to monitor and control the ICS1892 activity while the ICS1892 is operating in 10Base-T mode. Note: 1. For an explanation of acronyms used in Table 8-20, see Chapter 1, “Abbreviations and Acronyms”. 2. During any write operation to any bit in this register, the STA must write the default value to all Reserved bits. 8.13.1 ICS Reserved (bit 18.15) ICS reserves this bit for future use. Functionally, this bit is equivalent to an IEEE Reserved bit. When this reserved bits is: • Read by an STA, the ICS1892 returns a logic zero. • Written to by an STA, the STA must use the default value specified in this data sheet. In general, ICS uses some reserved bits to invoke auxiliary functions. To ensure proper operation of the ICS1892, an STA must maintain the default value of these bits. Therefore, ICS recommends that an STA always write the default value of any reserved bits during all management register write operations. Table 8-20. 10Base-T Operations Register (register 18 [0x12]) Bit Definition When Bit = 0 When Bit = 1 Ac- cess SF De- fault Hex 18.15 ICS reserved Read unspecified Read unspecified RW/0 SC 0 – 18.14 Polarity reversed Normal polarity Polarity reversed RO LH 0 18.13 ICS reserved Read unspecified Read unspecified RW/0 – – 18.12 ICS reserved Read unspecified Read unspecified RW/0 – – 18.11 ICS reserved Read unspecified Read unspecified RW/0 – – – 18.10 ICS reserved Read unspecified Read unspecified RW/0 – – 18.9 ICS reserved Read unspecified Read unspecified RW/0 – – 18.8 ICS reserved Read unspecified Read unspecified RW/0 – – 18.7 ICS reserved Read unspecified Read unspecified RW/0 – – – 18.6 ICS reserved Read unspecified Read unspecified RW/0 – – 18.5 Jabber inhibit Normal Jabber behavior Jabber Check disabled RW – 0 18.4 ICS reserved Read unspecified Read unspecified RW/1 – 1 18.3 Auto polarity inhibit Polarity automatically corrected Polarity not automatically corrected RW – 0 0 18.2 SQE test inhibit Normal SQE test behavior SQE test disabled RW – 0 18.1 Link Loss inhibit Normal Link Loss behavior Link Always = Link Pass RW – 0 18.0 Squelch inhibit Normal squelch behavior No squelch RW – 0 |
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